Home / 16,781.00-25,161.71-12,980.21

Finding the Fourth Proportional to 16,781.00, 25,161.71 and 12,980.21

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Solution

The fourth proportional to 16,781.00, 25,161.71 and 12,980.21 is: 19,462.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,781.00 : 25,161.71 = 12,980.21 : x
  2. Step 2: Convert to fraction form
    16,781.00/25,161.71 = 12,980.21/x
  3. Step 3: Cross multiply
    16,781.00x = 25,161.71 × 12,980.21
  4. Step 4: Simplify right side
    16,781.00x = 326,604,089.05
  5. Step 5: Solve for x
    x = 326,604,089.05/16,781.00
  6. Step 6: Final answer
    x = 19,462.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.